<div>Dear Grads Users,</div><div><br></div><div>I must estimate the cuasi-geostrophic Potential Vorticity on a pressure surface, and I would like to try using a grads script. If someone has already done it and is willing to share it, I will much appreciate.</div>
<div><br></div><div>Many thanks</div><div><br></div><div>Eduardo.</div><div><br></div><div><br></div>